Rooftop support base



FIG. 1 is a top perspective view of a rooftop support base, showing our new design in its environment;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevation view, the rear elevation view being a mirror image thereof;

FIG. 5 is a rear sectional view taken along lines 5-5 from FIG. 2 thereof;

FIG. 6 is a left side elevation view, the right side elevation view being a mirror image thereof;

FIG. 7 is a top perspective view thereof;

FIG. 8 is a top perspective view in an environment of use thereof;

FIG. 9 is a top perspective view in an environment of use thereof;

FIG. 10 is a top perspective view in an environment of use thereof;

FIG. 11 is a top perspective view in an environment of use thereof;

FIG. 12 is a top perspective view in an environment of use thereof; and,

FIG. 13 is a top perspective view in an environment of use.

The broken lines in FIGS. 1 and 8-13 depict environmental subject matter of piping and hardware for the invention and form no part of the claimed design. 

CLAIM The ornamental design for a rooftop support base, as shown and described. 